Carbureter.



vF. O. BALL.

CARBURETER.

APPLICATION FILED AUG.30. I9I6.

L Patented OCI. I6, 1917.

@Mom m UNITED STATES PATENT oEEioE.

FREDERICK 0. BALL, OF DETROIT, MICHIGAN, ASSIGNOR, BY DIRECT AND MESNEASSIGNMENTS, TO BALL & BALL CARBURETOR COMPANY, 0F DETROIT, MICHI- -GAN,A. COBPORATION'OE MICHIGAN.

CARBURETER.

Specification of Letters Patent.

Patented Oct. 16, 1917.

Application filed August 30, 1916. Serial No. 117,606.

T 0 all whom t may concern:

Be it known that I, FREDERICK O. BALL, a citizen of the United States,residing at Detroit, in the county ot' Vayne and State of Michigan, haveinvented new and useful Improvements in Carbureters, of which thefollowing is a specification.

This invention relates to carbureters and consists in certainimprovements in the construction thereof as will be hereinafter fullydescribed and pointed out in the claims.

It is desirable to momentarily supplement the normal fuel supplied tothe carbureter as the throttle is opened. Such devices are usuallytermed pick-up devices and this invention has particular reference tothis feature. The drawings show a vertical central section through thecarbureter, small portions being shown in elevation to better showconstruction.

1 marks the float chamber, 2 the float, 3 the inlet valve, L1 the inletconnection, 5 the mechanism f or communicating the movement of the floatto the valve, G the cover .and 7 the clip for holding the cover inplace.

The float chamber has a projection S extending under the body of thecarbureter and is secured to the body of the carbureter by a screw 9which extends lthrough the extension 8 and forms a closure for a chamber10. The screw has a reduced portion forming a. passage 11 whichcommunicates with the passage 12. A passage 13 extends into: the body ofthe carbureter from the passage 11 and communicates with a passage letleading t-o the nozzle 15. The nozzle is arranged in the Venturi tube 16torming an initial air opening of the carbureter. The Venturi tube opensinto the mixing chamber 17. An auxiliary air opening 18 is provided.This is controlled by a yielding valve 19 operating on the seat 20. Thevalve is guided by a pin 21 extending from a cap 22. A spring 23yieldingly holds the valve to its seat. A throttle valve 24 is arrangedon the stem 25. It is operated through a lever-'26, the lever 26 havingthe usual eye to which the throttle controlling device may be attached.A choke valve 28 is also provided at the air inlet 29. This 1s mountedon the stem 30, the stem being controlled by a lever 31. So far asdescribed this may be any desirable form of carbureter.

Radial passages 38 are arranged in the screw 9 and communicate with anaxial passage-32 leading to the chamber 10. An upwardly extending cup orpassage 34 is arranged at the upper end of the" screw and this hasradial openings 35 communicating with the chamber 10. A needle valve 3Gis adapted to close the 'passage It is carried by a stem 3T whichterminates at its upper end -in a collar or shoulder 38. bell cranklever 239 is pivotally mounted on the carbureter by means ot' a pin 3W.,One arm 10 is adapted to engage the shoulder 38 as the lever is swung.The opposite arm 41 has a roller d2 arranged in the path ot a cam 43 onthe lever 2G. A spring 4;-1 tends to hold the arm 40 ot' the lever'ii)in its upper position as shown. then the throttle is opened the cam 43voperating against the roller 4,2 swings the arm 41 toward the leftdepressing the arm l0. The spring 3G then closes the valve 36.cylindrical projection 45 extends over the projection IH and is carriedby a plug 4.3 extending upwardlv through the upper walls of the chamber.Thel plug 45d has an axial passage lo. Radial passages #t7 extend fromthe passage 46 into an annular passage 48 termed by a groove in the.plug. The passage '-18 communicates with a passage 49 in the body ot thecarbureter leading to the mixing chamber adjacent tothe Venturi tube.

A valye 50 controls the passage 16. This valve liasla sleeve-shaped stem51 which ex tends upwardly through the plug 45 and is arranged aroundthestem 37. The stem 51 terminates in a collar 52. The spring 36 isarranged against. the valve 50 so that when tho stem is released thevalve 50 is closed. lVhen the throttle is opened and the arm -LOdepressed it engages the collar 52 and opens the valve 50. A passage thevalve 36 is first closed and then the valve opened through the movementof the arm 40 and this through the action of the cam 43. Vit-h thevalves in this position, that is, the valve 36 closed and the valve 50open the suction incident to the reduced pressure in Ythe mixing chamberdraws the fuel from the fuel chamber through the cylinder #15, passage46 and intermediate passages to the passage 49 discharging into themixing chamber a. pre-determined amount contained in the chamber. Assoon as this amount is discharged there can be no further filling of thefuel chamber nor discharge of fuel` from this source until the throttleis again closed. Vhen this happens the valve 50 is closed and the valve36 opened permitting the receptacle 10 to again lill.

In this Way a pre-determined amount of fuel is discharged to the mixingchamber when the throttle is opened and after this pre-determined chargeis delivered there is no interference With the normal functioning of thecarbureter.

What I claim as new is 1. In a carbureter, the combination of a mixingchamber; means for supplying air and the normal fuel to said chamber; athrottle valve; devices for augmenting the normal fuel supply after thethrottle is opened comprising avreceptacle having a supply passageleading from a fuel supply and a discharge passage leading to the mixingchamber; valves for said passages; and

n means acting when the throttle is actuated for actuating said valvesalternately to close the supply passage and open the discharge passagewhen the throttle is opened and to close the discharge passage and openthe supply passage when the throttle is closed.

2. In a carbureter, the combination of a mixing chamber; means forsupplying air and the normal fuel to said chamber; a throttle valve;devices for augmenting the normal fuel supply after the throttle isopened comprising a receptacle having a supply passage leading from afuel supply;

a discharge passage leading to the mixing.

chamber and a passage leading to the air; valves for said passages; andmeans acting when the throttle is actuated for actuating a dischargepassage leading to the mixing chamber; valves for said passages; andmeans having a mechanical connection with the throttle actuating whenthe throttle is actuated said valves alternately to close the supplypassage and open the discharge passage when the throttle is opened andto close the discharge passage and open the supply passage when thethrottle is closed.

41. In a carbureter, the combination of a mixing chamber; means forsupplying air and the normal fuel to said chamber; a throttle valve;devices for augmenting the normal fuel supply after the throttle isopened comprising a receptacle having a supply passage leading from afuel supply and a discharge passage leading to the mixing chamber;valves fory said passages, said valves having independent stems; andmechanism mechanically actuated from the throttle valve operating onsaid stems to actuate said valves alternately to close the supplypassage and open the discharge passage when the throttle is opened andto close the discharge passage and open the supply passage When thethrottle is closed.

5. In a carbureter, the combination of a mixing chamber; means forsupplying air and the normal fuel to said chamber; a throttle valve;devices for augmenting the normal fuel supply after the throttle isopened comprising a receptacle having a sup,- ply passage leading from afuel supply and a discharge passage leading to the mixing chamber;valves for said passages, said valves being arranged concentrically, thevalv'e controlling the supply passage having a stem and the valvecontrolling the discharge passage having a sleeve-shaped stem arrangedaround the stem of the valve controlling the supply passage; shoulderson said stems; and alever operating between stidshoulders and actuatedwith lthe thrott e.

.(3.a In a carbureter, the combination of a mixing chamber; means forsupplying air and the normal fuel to said chamber; a throttle valve;devices for augmenting the normal fuel supply after the throttle isopened comprising a receptacle having a supply passage Aleading from afuel supply and a discharge passage leading to the mixing eha'lnher;valves for saitl passages. Saul valves living arranged roneentril-ally.the valve controlling the suppl)v passage having a stein and the valvecontrolling the lisharre passage having' a sleeve-shaped stem arrangedaround the stein of the valve eontrolling the supply passage; shoulderson said stems; a lever operating between said shoulders and actuatedwith the throttle; and a spring arranged between the valves on the stemof the valve controllingthe supply passage.

In testimony whereotI I have hereunto set nrv hand.

FREDERICK O. BALL.

